The screen on the Forerunner 610 may need to be calibrated if the device is not accurately responding to touch.
To calibrate the Forerunner 610:
Once the calibration screen is present, complete the calibration process by touching the dot with a stylus or other sufficiently accurate tool as it moves around the screen. It can be difficult to complete the screen calibration process by using your finger.
The device will finish powering on as usual once the calibration is complete.